I also go the tackle-box route– I just recently had to consolidate things to make room for my new baby (the wife has confiscated my office and I now have a smallish corner and one set of shelves). I put the pieces in tackle-boxes by country (and divided them out all OCD-like) and reduced my games to fill the two second edition G40 boxes with all the extra stuff-- boards, references, and the like. I got one of those binders that you can clip magazines in to hold all the rulebooks. This helped me with controlling my E1940.2, P1940.2, 1941, Spring 1942(x2), Spring 1942, Pacific, and Revised. It was a bit hard to break things down at first-- doing so much can be overwhelming. However, I persevered, and it feels satisfying.
The hardest part was cutting the setup charts off the G40 unit storage bins, but I could not afford that much dead space. The tops are now “cards,” and my wife uses the black box bottoms as drawer organizers.
If you are not selling them ever, then go for it. Good luck.